The Amir His Highness Sheikh Tamim bin Hamad Al Thani patronised the opening ceremony of the 7th edition of Doha International Maritime Defence Exhibition and Conference (DIMDEX 2022) at Qatar National Convention Centre on Monday. The opening ceremony was also attended by Prime Minister and Minister of Interior HE Sheikh Khalid bin Khalifa bin Abdulaziz Al Thani, a number of sheikhs, ministers, and ministers of defence and chiefs of staff of friendly countries. (QNA)